Home / 171,121.72-236,177.16-99,543.28

Finding the Fourth Proportional to 171,121.72, 236,177.16 and 99,543.28

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Solution

The fourth proportional to 171,121.72, 236,177.16 and 99,543.28 is: 137,386.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,121.72 : 236,177.16 = 99,543.28 : x
  2. Step 2: Convert to fraction form
    171,121.72/236,177.16 = 99,543.28/x
  3. Step 3: Cross multiply
    171,121.72x = 236,177.16 × 99,543.28
  4. Step 4: Simplify right side
    171,121.72x = 23,509,849,167.48
  5. Step 5: Solve for x
    x = 23,509,849,167.48/171,121.72
  6. Step 6: Final answer
    x = 137,386.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.